284057725 has 24 divisors (see below), whose sum is σ = 405751808. Its totient is φ = 193233600.

The previous prime is 284057671. The next prime is 284057729. The reversal of 284057725 is 527750482.

It is a happy number.

It is not a de Polignac number, because 284057725 - 2¹⁵ = 284024957 is a prime.

It is a super-2 number, since 2×284057725² = 161377582264351250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284057729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15835 + ... + 28615.

Almost surely, 2^284057725 is an apocalyptic number.

284057725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

284057725 is a deficient number, since it is larger than the sum of its proper divisors (121694083).

284057725 is a wasteful number, since it uses less digits than its factorization.

284057725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12925 (or 12920 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 284057725 is about 16854.0121336138. The cubic root of 284057725 is about 657.3583766833.

The spelling of 284057725 in words is "two hundred eighty-four million, fifty-seven thousand, seven hundred twenty-five".